Composition for forming explosives with liquid oxygen.



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EflEt-ZEING EXlLUSIVES WITH LIQUID OXYGEN.

Specification of Letters Eatent.

Application January 25, 191. Serial No. WM-.33

To (ZZZ whom it may concern 2 Be it known that l, Gnoncns CLAUDE, a citizen of the Republic of France, residing at 48 Rue St. Lazaro, Paris, in the Republic of France, have invented certain new and useful Improvements in Compositions for Forming Explosives with Liquid Oxygen, of which the following is a specification.

This invention relates to compositions for forming explosives and has particular reference to blasting material of the kind in which powdered aluminium or a similarlyacting metallic substance is used in conjunction With liquid oxygen.

According to the present invention the composition With which the liquid oxygen is used is composed of powdered aluminium or a similarly-acting metallic substance, presenting the same great advantage of yield ing innocuous products of combustion,

mixed with a suitable inert material, the proportion being such that, in case of aluminium, each contains from one hundred to sixhundred grams of the aluminium. As the inert material, which should also light, silica, infusorial earth (liieselguhr), or light metal lic oxids, alumina for example, may be used. In place of powdered aluminium a chemically equivalent amount of any other combustible metal or compound having innocuous products of combustion may be employed, as for example a metallic silicid or hydrid, calcium liydrid for example.

The composition may be shaped into our tridges and stored in bags of canvas or other porous material and be furnished with an igniting device of any approoriate kind, for example a fusible wire, alone or associated with a detonating substance such as ful'minate. Vlhen it is desired to a cartridge, it is immersed in liquid oxygen for some time, and then taken out of the liquid and placed in position for instance in a hole in the rock to be blasted. afi'ords suliicient time for placing in position, the flight of the operator into safety.

In order to lengthen val avail able lace he cartridge between an e o in posi 'on and t oi: i explosion, notes in the which interval -l case of cartridge two hundred may be programs. a neat-insul:z constlliter of the composition tute a double or jacketed envelop with an empty space between its inner and outer Walls-o1" may consist of asbestos or other suitable absorbent material, which becomes impregnated with the liquid oxygen into which the Whole is dipped just prior to use and thereby constitutes for toe minutes protection for the cartridge proper against the penetration of heat.

The composition above described is distinguished by several important features. The efllcacy of the composition is due to the vaporizing and sudden expanding eilect of the heat of combustion upon the excess or" liquid. oxygen that it contains. ()Wing to the choice of the substances used t iere is an absence of noxious or offensive products of the combustion and these products are solid at ordinary temperatures. The high explosive power of the composition when in-- pregnated with liquid oxygen is due to the fact that, notwithstanding the relatively small quantity of combustible, the latter is uniformly disseminated in sufficient quantity throughout the Whole mass owing to the inert material acting as a diluent, with the result that at each point there is a production of the exact quantity oi heat necessary for the full explosive action, Whereas otherwise the explosive action would take place in two stages, one being the oroduction of the heat and the other the transmission of this heat to the excess of liquid oxygen, thereby greatly impairing the violence of: the action.

It will be understood that, as liquid oxygen evauorates after a short time, the r k of inisfires is eliminated; also the composition can be stored with. safety, because the solid products of which it is composed are inert of themselves and do not need to be nil). or impregnated with liquid oxygen 1 just prior to use.

What ll claim and desire to secure by ters Patent of the is e 1. A composition for for with liquid oxygen, comprisi ble metallic substance yieldin, 7 o

a I innocuous cts o: combus uent, t 1

in one liter of ti e composition be cally equivalent to from one to sin. hundred grams of powdered aluminium,

Patented Sept. 1 :914.

2. A composition for forming explosives with liquid oxygen, comprising a combustible metal in powder form, and a light inert substance acting as a solid diluent, the amount of the powdered metal in one liter of the composition being chemically equivalent to from one to six hundred grams of powdered aluminium.

3. A composition for formingexplosives with liquid oxygen, comprising powdered aluminium, and a light inert solid substance.

- ble metallic. substance yielding by oxidation innocuous products of combustion, and a light inert substance acting as a solid diluent, the amount of the metallic substance in'one liter of the compositio'n 'being chemically equivalent to from one-to six hundred grams of powdered aluminium, and a'porous bag surrounding the composition to form it into acartridge. a I

6. A composition for forming explosives with liquid-oxygen, comprising powdered aluminium, and a light inert solid substance, these constituents being in the proportion of fromone hundred to six hundred grams of the powdered metalto each liter of the mixture, and a porous bag surrounding the composition to form it into a cartridge. 7 A composition for forming explosives with liquid oxygemcomprising a combustible metallic substance yieldingby oxidation innocuous products of combustion, and a light inert substance, acting, as asolid diluent, the amount of the metallic substance in one liter of the.v composition ,being chemically equivalent to from one tosix hundred grams of powdered aluminium, a porous bag surrounding the composition to form it. into a cartridge, and a -heat,.insulating sheath enveloping the ha 8. A composition 'for ormingexplosives with liquid oxygen, comprising powdered aluminium, and a light inert solid substance these constituents being in the proportion of from one. hundred to six hundred grams of the powdered metal to each liter of the mixture, a bag surrounding the composition to form it into a cartridge, and a heat-insulat ing sheath enveloping the bag.

9. A "composition for forming explosives with liquid oxygen, comprisinga combustible metallic substance yieldingby oxidation innocuous products of combustion, and a light-inert substance, acting as a solid diluent, the amount of the metallic substance in one liter of the composition being 'chemi-- cally equivalent to from one to six hundred grams of powdered aluminium, a bag surrounding the composition to form itinto a' cartridge, and an asbestos sheath enveloping the bag.

- 10. A composition for forming explosives with liquid oxygen, comprising powdered aluminium, and a light inert solid substance,

these constituents being in the proportion of from one hundred to .six hundred grams of the powdered metal to each liter of the mixture, a bag surrounding the composittpn' to form it into a cartridge, and an as estos sheath enveloping the bag,

In testimony whereof I aflix my signature in presence of two witnesses.

; Witnesses:

PIERRE HOURLIER,

LUCIEN MEMMINGER.

enonens CLAUDE. 

